The following is a list of characters that have appeared or have been referred to in the Peanuts comic strip by Charles M. Schulz. Characters who appear in movies, TV specials and episodes of TV series based on Peanuts but have never appeared in the strip itself are listed separately.
Major characters

Most of the major and supporting characters of Peanuts. Top left to bottom right: Shermy, Rerun, Eudora, Sally, Linus, Charlie Brown, Lucy, Schroeder, Peppermint Patty, Frieda, Marcie, Franklin, Violet, "Pig-Pen", Patty, Snoopy and Woodstock.

A who's who of Peanuts characters, arranged chronologically by first appearance
- Charlie Brown
- Sally Brown
- Marcie
- Peppermint Patty
- Schroeder
- Snoopy
- Spike
- Linus van Pelt
- Lucy van Pelt
- Woodstock
Supporting characters
Minor characters

Joe Agate.

Peggy Jean.

Tapioca Pudding.

Molly Volley.

Thibault.

Snoopy and his siblings.
- Andy
- Harold Angel
- "Badcall" Benny
- Beach-Beagle
- Belle
- Belle's son
- Charlotte Braun
- Clara
- Cormac
- "Crybaby" Boobie
- Emily
- Ethan
- Faron
- Floyd
- The Goose Eggs (Ruby, Austin, Leland, and Milo)
- Peggy Jean
- Larry
- Lila
- The Little Pigtailed Girl
- Loretta
- Marbles
- Maynard
- Naomi
- Olaf
- JosƩ Peterson
- Poochie
- Tapioca Pudding
- Joe Richkid
- Roy
- Royanne
- Shirley
- "Shut Up and Leave Me Alone"
- Snoopy's Beagle Scouts
- Snoopy's parents
- Snoopy's siblings
- Sophie
- Thibault
- Truffles
- Unnamed Ponytailed Girl
- Molly Volley
- Various unnamed birds who appeared in the strip before the introduction of Woodstock
- Various unnamed or unknown characters
Unseen characters
- Adults
- Amy
- Beach-Beagle
- Mr. and Mrs. Brown
- Mr. and Mrs. van Pelt
- Charlie Brown's pen(cil) pal
- Linus' blanket-hating grandmother
- The Little Red-Haired Girl
- The Little Red-Haired Girl's grandmother
- Miss Othmar
- Joe Shlabotnik
- Helen Sweetstory
- Snoopy's fiancƩ
- World War II (cat next door)
Objects or imaginary characters

The Kite-Eating Tree.
TV and movie characters
The following characters appear in animated movies, TV specials and episodes of TV series based on the Peanuts comic strip but have never appeared in the strip itself.

Freddie Fabulous.
- Russell Anderson
- Babette
- Silas Brown
- Brutus
- Camp bullies
- Dolly
- Dolores (created for a series of educational filmstrips)
- Janice Emmons
- Evelyn
- Freddie Fabulous
- Fifi
- Violette Honfleur
- Jacques
- Lila's cat
- Mary Jo
- Melody-Melody
- Mimi
- Molly and Rover
- Mora
- Pierre
- Polly
- Sandy
- Snoopy's fiancƩe
- Felix van Pelt